Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of Affiliate Receivables and Payables

The following table presents the affiliate balances related to income taxes for Ameren Missouri and Ameren Illinois as of September 30, 2020, and December 31, 2019:


	September 30, 2020				December 31, 2019
	Ameren Missouri		Ameren Illinois		Ameren Missouri		Ameren Illinois
Income taxes payable to parent(a)	$	38	$	9	$	15	$	43
Income taxes receivable from parent(b)	—		6		15		17

(a)Included in “Accounts payable – affiliates” on the balance sheet.

(b)Included in “Accounts receivable – affiliates” on the balance sheet.

Schedule of Related Party Transactions

The following table presents the effect on Ameren Missouri and Ameren Illinois of related-party transactions for the three and nine months ended September 30, 2020 and 2019:


				Three Months				Nine Months
Agreement	Income Statement Line Item			Ameren Missouri		Ameren Illinois		Ameren Missouri		Ameren Illinois
Ameren Missouri power supply	Operating Revenues	2020	$	5	$	(a)	$	11	$	(a)
agreements with Ameren Illinois		2019		1		(a)		3		(a)
Ameren Missouri and Ameren Illinois	Operating Revenues	2020	$	6	$	(b)	$	19	$	1
rent and facility services		2019		7		1		20		2
Ameren Missouri and Ameren Illinois	Operating Revenues	2020	$	(b)	$	1	$	1	$	1
miscellaneous support services		2019		1		(b)		1		1
Ameren Missouri software licensing	Operating Revenues	2020	$	(a)	$	(a)	$	(a)	$	(a)
with Ameren Illinois(c)		2019		(a)		19		(a)		19
Total Operating Revenues		2020	$	11	$	1	$	31	$	2
		2019		9		20		24		22
Ameren Illinois power supply	Purchased Power	2020	$	(a)	$	5	$	(a)	$	11
agreements with Ameren Missouri		2019		(a)		1		(a)		3
Ameren Illinois transmission	Purchased Power	2020	$	(a)	$	(b)	$	(a)	$	1
services with ATXI		2019		(a)		1		(a)		1
Total Purchased Power		2020	$	(a)	$	5	$	(a)	$	12
		2019		(a)		2		(a)		4
Ameren Missouri and Ameren Illinois	Other Operations and Maintenance	2020	$	(b)	$	1	$	(b)	$	3
rent and facility services		2019		(b)		1		1		4
Ameren Services support services	Other Operations and Maintenance	2020	$	36	$	34	$	103	$	98
agreement		2019		34		30		98		91
Total Other Operations and		2020	$	36	$	35	$	103	$	101
Maintenance		2019		34		31		99		95
Money pool borrowings (advances)	(Interest Charges)/Other Income, Net	2020	$	(b)	$	(b)	$	(b)	$	(b)
		2019		(b)		(b)		(b)		(b)

(a)Not applicable.

(b)Amount less than $1 million.

(c)In September 2019, Ameren Missouri purchased a license for advanced metering infrastructure software from Ameren Illinois. The amount of the $24 million cost-based transaction price over the $5 million remaining carrying value of the software was recorded as revenue by Ameren Illinois, with $14 million of revenue recorded at Ameren Illinois Electric Distribution and $5 million recorded at Ameren Illinois Natural Gas. The revenue recorded at Ameren Illinois Electric Distribution was reflected in formula ratemaking, which resulted in no impact to net income. Per authoritative accounting guidance for sales to rate-regulated entities, the revenue recognized by Ameren Illinois was not eliminated upon consolidation by Ameren.